A Direct Electrochemical H2S Sensor Based on Ti3C2Tx MXene,ChemElectroChem

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A Direct Electrochemical H2S Sensor Based on Ti3C2Tx MXene
ChemElectroChem ( IF 3.5 ) Pub Date : 2021-08-22 , DOI: 10.1002/celc.202100964
Xinran Liu ₁ , Liang He ₂ , Ping Li ₃ , Xinqi Li ₄ , Pandong Zhang ₁

Affiliation

The layered structure of two-dimensional transition metal carbon/nitride and its excellent physical and chemical properties make it a major research hotspot in the field of sensing. Meanwhile, characteristics such as good biocompatibility and hydrophilicity make this type of material a good potential biological sensing material. In this work, a graphene-like structure composed of multilayer Ti₃C₂T_x MXene was successfully synthesized by a simple hydrogen fluoride etching method, and an attempt was made to use it for non-enzymatic H₂S electrochemical sensing. The electrochemical test results show that the modified Ti₃C₂T_x MXene/GCE has a high sensitivity (0.587 μA μM⁻¹ cm⁻²) for the detection of trace H₂S. At the same time, it shows a low detection limit (16.0 nM) and a wide detection range (100 nM–300 μM). The result provides a new research direction for H₂S electrochemical sensing, as well as a new platform for MXene materials in biological sensing.

中文翻译：

基于 Ti3C2Tx MXene 的直接电化学 H2S 传感器

二维过渡金属碳/氮化物的层状结构及其优异的理化性能使其成为传感领域的一大研究热点。同时，良好的生物相容性和亲水性等特性使该类材料成为良好的潜在生物传感材料。在这项工作中，通过简单的氟化氢蚀刻方法成功合成了由多层 Ti ₃ C ₂ T _x MXene组成的类石墨烯结构，并尝试将其用于非酶促 H ₂ S 电化学传感。电化学测试结果表明，改性Ti ₃ C ₂ T _xMXene/GCE对痕量 H ₂ S的检测具有高灵敏度 (0.587 μA μM ^-1 cm ^-2 ) 。同时，它显示出低检测限 (16.0 nM) 和宽检测范围 (100 nM– 300 微米）。该结果为H ₂ S电化学传感提供了新的研究方向，也为MXene材料在生物传感中的应用提供了新的平台。

更新日期：2021-10-01

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